Why won't my yeast dough rise?

Difficulty: Easy · Time: approx. 15 minutes

When yeast dough won't rise, the temperature or the yeast is almost always to blame. Yeast is a living organism: it needs warmth, food (sugar/flour) and some time – but it dies in too much heat.

The good news: in many cases you can still save the dough by improving the conditions. With a few simple checks you can find out what's wrong.

What you'll need

  • Fresh or dried yeast
  • Lukewarm water/milk (approx. 30–35 °C, hand-warm)
  • A pinch of sugar
  • Bowl + tea towel
  • Optional: a thermometer

Step by step

  1. 1

    Test the yeast

    Mix the yeast with a little lukewarm water and a pinch of sugar. If foam forms after 5–10 minutes, it's alive. If nothing happens, the yeast is dead – use fresh yeast.

  2. 2

    Check the temperature

    The liquid should only be hand-warm (~30–35 °C). Too hot kills the yeast, too cold slows it down. Better lukewarm than hot.

  3. 3

    Find a warm spot

    Put the dough in a draught-free warm place: next to the radiator, in an oven pre-warmed to 30–40 °C (then switched off), or in a water bath.

  4. 4

    Give it time

    Cover the dough with a damp cloth and give it 60–90 minutes. Yeast dough needs patience – it should visibly roughly double.

  5. 5

    Rescue if needed

    If nothing happens at all: dissolve fresh yeast in a little lukewarm water, knead it into the dough and let it rise again.

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Frequently asked questions

Can I put salt and yeast together?
Not directly: salt in direct contact draws water from the yeast and slows it. Add salt to the flour first, and the mixed yeast separately.
Does sugar help the dough rise?
A pinch of sugar gives the yeast starter food and speeds up the beginning. Too much sugar slows it down, though – so use it sparingly.